15723 2025-01-21 15:14:33 +0000 Rust based pydantic-core .so file fails to load on target when libstd-rs build with DEBUG_BUILD 2026-10-22 15:08:48 +0000 1 1 7 Build System, Metadata & Runtime OE-Core devtools / tool chain 5.0.9 Other arm NEEDINFO Medium normal 6.2 1 ernstp ernstp deepesh.varatharajan meta.mr.watcher meta.watcher randy.macleod sundeep.kokkonda yoann.congal --- --- Don't know oldest_to_newest 100708 0 ernstp 2025-01-21 15:14:33 +0000 Setup: Yocto Scarthgap 5.0.7 MACHINE=qemuarm DEBUG_BUILD = "1" # Actually all you need is just DEBUG_BUILD:pn-libstd-rs = "1" Add meta-openembedded with meta-oe and meta-python. bitbake python3-pydantic-core What happens: objdump -TC tmp/work/cortexa*-neon-poky-linux-gnueabi/python3-pydantic-core/*/image/usr/lib/python3.12/site-packages/pydantic_core/_pydantic_core.cpython-312-arm-linux-gnueabihf.so | grep panic 00000000 D *UND* 00000000 Base core::panicking::panic On target it looks like this: File "/usr/lib/python3.12/site-packages/pydantic_core/__init__.py", line 6, in <module> from ._pydantic_core import ( ImportError: /usr/lib/python3.12/site-packages/pydantic_core/_pydantic_core.cpython-312-arm-linux-gnueabihf.so: undefined symbol: _ZN4core9panicking5panic17h3dccdbb9a3027529E It's absolutely related to https://patchwork.yoctoproject.org/project/oe-core/patch/20211206054504.61115-1-pgowda.cve@gmail.com/#298 , though it's not exactly the same either... 100718 1 randy.macleod 2025-01-23 15:45:53 +0000 Ernst, Thanks for the bug report. Sundeep will have someone take a look eventually. 100739 2 ernstp 2025-01-24 11:07:45 +0000 Simply updating pydantic-core with Scarthgap did not solve it. I tried to reproduce it on master now but could not reproduce it there however. 101968 3 randy.macleod 2025-05-15 18:45:46 +0000 Is this still a problem? 101975 4 ernstp 2025-05-16 10:31:07 +0000 Yes, still happens on Scarthgap. 104217 5 randy.macleod 2026-02-10 16:24:53 +0000 Deepesh, Is there an upstream Rust bug to track and focus work on this issue? 107060 6 deepesh.varatharajan 2026-10-14 05:49:05 +0000 Hi, I tested with the latest Scarthgap sources, adding meta-oe and meta-python on top of oe-core. In local.conf: MACHINE = "qemuarm" DEBUG_BUILD:pn-libstd-rs = "1" Then ran bitbake python3-pydantic-core and could not reproduce the issue. Ernst, are you still experiencing this issue, or can we close it? 107066 7 randy.macleod 2026-10-14 15:04:22 +0000 Ernest, See Deepesh's question please. Deepesh, please use "Need Info" state. We track that for no response so issues don't get forgotten.